New Holland T8010 Manual page 1344

INSTRUMENTATION AND WARNING SYSTEM
Instrumentation and Warning System Circuit Troubleshooting
Before troubleshooting the instrumentation and warning system make sure that the following operating conditions
are met:
1. The batteries are fully charged and all connections are clean and tight.
2. Transmission in neutral or park.
3. Check all connectors for full installation, loose, corroded, pushed out, or bent terminals.
4. Fuses #15, #16 and #37 intact and receiving power.
NOTE: Refer to NAO Electrical Schematic 87389710, schematic sections 24, 25, 26, 55 and 56.
Instrumentation and Warning System Symptom Chart
NOTE: The batteries must be fully charged and all connections clean and tight. Use a multimeter (DVOM) for these
tests. For battery testing and service, see the battery section in the service manual.
IMPORTANT: DO NOT use a self-powered test light for any of these tests. Use of a self-powered test light can
cause damage to components in this system.
WARNING: Before performing any of the electrical tests, be sure all operating controls are in neutral or
!
park lock position. This will eliminate accidental movement of the machine or start-up of power driven
equipment.
Symptom
Coolant temperature gauge
does not operate
Oil pressure gauge does not
operate
Fuel level gauge does not
operate
Section 55 - Electrical System - Chapter 1
Possible Cause
Sending unit
Instrument cluster
Gauge unit
Circuit
Sending unit
Instrument cluster
Gauge unit
Circuit
Sending unit
Instrument cluster
Gauge unit
Circuit
55-1-163
Reference/Test
B - Engine Coolant Temperature
Sender Circuit Test
A - Instrumentation and Warning
System Power and Ground
Supply Test
B - Engine Coolant Temperature
Sender Circuit Test
B - Engine Coolant Temperature
Sender Circuit Test
C - Engine Oil Pressure Sender
Circuit Test
A - Instrumentation and Warning
System Power and Ground
Supply Test
C - Engine Oil Pressure Sender
Circuit Test
C - Engine Oil Pressure Sender
Circuit Test
D - Fuel Sender Circuit Test
A - Instrumentation and Warning
System Power and Ground
Supply Test
D - Fuel Sender Circuit Test
D - Fuel Sender Circuit Test